491276080680 has 256 divisors, whose sum is σ = 1854676776960. Its totient is φ = 101129088000.

The previous prime is 491276080679. The next prime is 491276080693. The reversal of 491276080680 is 86080672194.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 740230 + ... + 1237130.

It is an arithmetic number, because the mean of its divisors is an integer number (7244831160).

Almost surely, 2^491276080680 is an apocalyptic number.

491276080680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491276080680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927338388480).

491276080680 is an abundant number, since it is smaller than the sum of its proper divisors (1363400696280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491276080680 is a wasteful number, since it uses less digits than its factorization.

491276080680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497040 (or 497036 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 491276080680 in words is "four hundred ninety-one billion, two hundred seventy-six million, eighty thousand, six hundred eighty".